3300 ACM Installation and Operation Manual Power Measurement Ltd.
Measured Parameters 4-7
4.3.3 BI-DIRECTIONAL ENERGY
Energy parameters provide three measurement modes which
indicate bi-directional power flow: imported, exported, and total.
Total measurements represent the difference between energy
imported and exported for all three phases. This accumulated
value is incremented when power is being imported, and
decremented when reactive power is exported. Therefore, this
accumulated value can be signed either positively (net import)
or negatively (net export).
kWH and kVARH can provide all three modes. The kVAH
energy parameter provides only a total reading.
NOTE
Conventions used in regards to energy im-
port/export are described in Section 4.3.4.
4.3.2 MINIMA / MAXIMA
Introduction
The 3300 ACM can optionally provide minima and maxima
measurements. These parameters record the extreme values
for real-time and demand parameters.
NOTE
On the front panel display, minima and
maxima are indicated using MIN and
MAX, respectively.
Resetting Min / Max Parameters
If the 3300 ACM has been equipped with one or more
minima/maxima parameters, the user can reset their values.
This can be perfomed using the RESET MIN/MAX? param-
eter from the front panel in programming mode, or via
communications. Setting this parameter to YES will cause all
min/max readings to be reset when the user exits program-
ming mode.
Courtesy of NationalSwitchgear.com
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